State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, PR China; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, PR China.
China Light Industry Enterprises Investment and Development Association, 22B. Fuwai Avenue, Xicheng District, Beijing 100833, PR China.
Food Chem. 2023 Dec 1;428:136733. doi: 10.1016/j.foodchem.2023.136733. Epub 2023 Jun 27.
The quality control of Baijiu is necessary including ethanol content. In this work, red-emitted carbon quantum dots based on p-phenylenediamine (PPD-CQDs) were fabricated for accurate determination of ethanol in Baijiu. The good linear response of PPD-CQDs to ethanol-water solution (E-Ws; 20-80 vol%) offered the potential for ethanol determination in practice. However, further application of this procedure to Baijiu resulted in a certain deviation. After excluding interference from most of the ingredients involved, a simple pH correction on Baijiu made application of the process practicable. The red-emission of PPD-CQDs supported analysis of Baijiu with different flavors and ethanol monitoring. Therefore, a quick-response fluorescence method was established for Baijiu ethanol determination; this method can be applied to the many varieties of Chinese Baijiu available and also has potential for use in other alcoholic beverages.
白酒的质量控制包括乙醇含量。在这项工作中，基于对苯二胺（PPD-CQDs）的红色发射碳量子点被制备用于准确测定白酒中的乙醇。PPD-CQDs 对乙醇水溶液（E-Ws；20-80 vol%）的良好线性响应为实际中的乙醇测定提供了潜力。然而，将该程序进一步应用于白酒会导致一定的偏差。排除了大多数涉及的成分的干扰后，对白酒进行简单的 pH 值修正使得该过程的应用变得可行。PPD-CQDs 的红色发射支持不同风味和乙醇监测的白酒分析。因此，建立了一种快速响应的荧光法用于测定白酒中的乙醇；该方法可应用于多种中国白酒，并有可能用于其他酒精饮料。
